Governor for steam-engines.



W. T. DAVIS. GOVERNOR FOR STEAM ENGINES. APPLICATION FILED MAY 18, 19091,012,611. Patented De0.26, 1911.

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[TNESSES INVENTOR I 11 W 7. WM 16, f v

COLUMBIA PLANOGRAPH CO..wAsHlNuToN, B c

W. T. DAVIS.

GOVERNOR FOR STEAM ENGINES.

APPLICATION FILED MAY 18, 1909.

1,012,61 1. Patented Dec. 26; 1911.

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WITNESSES INVENTOR WWW wman COLUMBIA PMNOGRAPH (10., WASHINGTON, D c.

WILLIAM T. DAVIS, 0F COMSTOCK, MICHIGAN.

GOVERNOR FOR STEAM-ENGINES.

Specification of Letters Patent.

Patented Dec. 26, 1911.

Application filed May 18, 1909. Serial No. 496,855.

To all whom it may concern:

Be it known that I, WILLIAM T. DAVIS, of Comstock, in the county ofKalamazoo and State of Michigan, have invented certain new and usefulImprovements in Governors for Steam-Engines; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same.

This invention relates to improvements in governors for steamengines,-one object of the invention being to so construct a governorthat a lever connected with the valve stem can be operated automaticallyin accordance with the speed of the engine and so that it can also beoperated. manually to control the speed of the engine or to stop thesame.

A further object is to compensate for lost motion between parts of thegovernor.

A further object is to provide simple and efficient means for adjustingthe governing mechanism to control the speed by the extent of theopening of the valve.

With these and other objects in view the invention consists in certainnovel features of construction and combinations of parts as hereinaftermore fully described and pointed out in the claims.

In the accompanying drawings, Figure 1 is a side elevation of a governorembodying my improvements. Fig. 2 is a horizontal sectional view, andFig. 3 is a vertical section.

1 represents a valve casing provided with suitable inlet and outletports and upon this casing a yoke or frame 2 is secured. The verticalarms 3-4 of the yoke or frame 2 are provided at their upper ends withbearings 56,the bearing 5 being internally threaded for the reception ofa tubular or socketed screw"? provided at one end with a lmob 8 and atthe other end with a collarv or enlargement 9. A horizontal shaft 10 ismounted in the bearing 6 of the yoke or frame 2 and also in the tubularor socketed screw 7 ,said shaft 10 being adapted to be connected withthe engine by means of any suitable gearing not shown.

A cross-head 11 having a tubular extension 12 is rigidly secured to theshaft 10 so as to rotate therewith and to the ends of this cross-head,weighted arms 13 are pivotally attached,the inner end of said armsterminating adjacent to the tubular extension 12 of the cross-head 11 soas to be in position to engage a disk or collar 14 loosely mounted onsaid tubular extension. A sleeve 15 is mounted to slide on the shaft 10and at one end this sleeve is provided with an enlargement 16 whichforms a casing for a spring l7,one end of said spring bearing againstthe disk or collar 14 and the other end against a collar 18 at one endof the tubular portion 12 on the cross-head 11. The casing orenlargement 16 on the sleeve 15 is provided with an elongated slot 19for the passage of a screw 20 which enters the collar 18, said screwpermitting longitudinal movement of the sleeve 15 but preventing thesame from rotation independently of the shaft 10.

The arm 4 of the yoke or frame 2 is provided with an opening 21 and withlugs 22 at respective sides of said opening. Between these lugs a lever23 is pivotally supported, the horizontal arm of said lever beingbifurcated for the accommodation of the vertical valve stem 24. Thisvalve stem is'threaded for the reception of collars 25 disposedrespectively above and below the horizontal arm of the lever and betweensaid horizontal arm and one of the adjustable collars 25, a spring 26 islocated to compensate for any lost motion which might occur between theconnection of the lever 23 with the valve stem. The vertical arm 27 ofthe lever 23 is made with an opening 28 for the passage of the shaft 10and said arm 27 projects a suitable distance above the shaft 10 and atits free end is provided with an eye 29 for the attachment of a suitablemanually operated device which will permit the manipulation of thevalve, through the medium of the lever 23, for manually controlling thespeed of the engine or for stopping the same.

The vertical arm 27 of the lever 23 bears against a collar 30 loose onthe shaft 10' and this collar may be provided with a pin 31 which entersthe opening in said vertical arm 27 A washer of soft material, asindicated at 32, is preferably located between the collar 30 and one endof the sleeve 15. The lever 23 is provided with an outwardly projectingarm 33 which passes through the opening 21 in the arm 4 of the yoke orframe 2, and at its free end said arm 33 is bifurcated for the passageof a rod 34. This rod engages, at one end, lugs 35 on the yoke or frame2 just under the bearing 6. The lower -mounted in the bearing 5 of theyoke or frame 2. The spring 87 thus operates to normally move the partsto their normal position and open the valve and it also serve: toprevent lost motion between the lever 23 and the sleeve 15.

It will be seen that by adjusting the screw 7 the governor head and thesleeve 15 can be moved to adjust the throw of the lever 23 and thusregulate the extent of opening of the valve. WVhen the screw 7 shallhave been adjusted for the purpose above stated, it can be retained insuch adjustment by means of a thumb screw passing through the bearing 5and engaging said screw.

Having fully described my invention what I claim as new and desire tosecure by Letters-Patent, is'

1. The combination with a valve, of a frame, a horizontally disposedgovernor shaft mounted for longitudinal adjustment,

.said shaft being shouldered at one end, a

bearing for said shaft arranged to engage said shoulder, said bearingbeing threaded into said frame for adjustment whereby the shaft may beadjusted longitudinally by the adjustment of said bearing, a governor imounted on said shaft to be adjusted there with, a valve actuatinglever, and a governor actuated member arranged on said shaft to act onsaid lever.v

2. The combination with a valve, of a frame, a governor shaft mountedfor longitudinal adjustment, a screw constituting one bearing for saidshaft, said screw being arranged to engage said shaft whereby the shaftis longitudinally adjusted by said screw, a governor mounted on saidshaft to be adjusted therewith, a governor actuated shafts, a governormounted on said shaft to be adjusted therewith, a governor actuatedmember on said shaft, a valve lever on which said governor actuatedmember acts, and a tension spring for said valve lever.

4c. The combination with a valve, of a frame, a horizontally disposedshaft mounted in said .frame for longitudinal adjustment, a governorcarried by said shaft and adapted to be adjusted longitudinallytherewith, a governor actuated sleeve mounted on said shaft, a valveactuating lever arranged to be acted upon by said sleeve, a tensionspring for said lever, and means for adjusting said shaft longitudinallyto adjust the governor relative to said lever.

55. The combination of a valve, the governor shaft mounted forlongitudinal adjustment, agovernor mounted on said shaft to belongitudinally adjustedtherewith, an adjusting screw for said shaft, agovernor actuated sleeve on said shaft, a valve actuating lever disposedto be actuated by said sleeve, and a spring for holding said leveryieldingly against said sleeve.

6. The combination with avalve, a yoke like frame, a horizontallydisposed governor shaft mounted on said frame for longitudinaladjustment, a governor carried by said shaft and adapted to be adjustedtherewith, a governor actuated sleeve mounted on said shaft forlongitudinal movement thereon, a spring for said sleeve, means foradjusting the tension of said spring, a valve actuating lever, arrangedto be acted upon by said sleeve, a spring for said lever and means forregulating the tension of said spring.

In testimony whereof, I have signed this specification in the presenceof two subscribing witnesses.

' WVILLIAM T. DAVIS. WVitnesses:

ELSIE BALDWIN,- EULA B. MASON. I

Gopies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

